Shuttle-changing mechanism for looms.



M..& R. LEMARGHAND L V. MUNTET.

SHUTTLE CHANGING MBGHANISM PoR Looms.

ArPLIoATIoN FILED AUG. a, 1907. '4 Patentad; Mar. 1,1910.

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3 SHEETS-SHEET 2.

M. a IL LEMARCHAND L V. MONTET.

SHUTTLE CHANGING MEGHNISM FOR LUOMS.

APPLICATION FILED AUG. 3, 1907. 9

` Patented Mar. 1,1910.

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MAURICE LEMARCHAND, RAYMOND LEIVIARCHAND, AND VICTOR MONTET, OF ROUEN, FRANCE.

SHUTTLE-CHANGING MECHANISM FOR LOOMS.

To all whom it may concern:

Be it known that we, MAURICE LEMAR- cHAnD, RAYMOND LEMARCHAND, and Vieron MoNTE'r, citizens of the Republic of France, residing at 83 Boulevard Gauchoise, Rouen, Seine-Infrieure, in the Republic of France, engineers, have invented certain new and useful Improvements in Shuttle-Changing Mechanisms for Looms, of which the following is a specification.

This invention relates to improvements in shuttle-changing mechanisms for weaving-looms, and has for its object to so construct an automatic device of this character, that it will be applicable to all kinds of looms and will serve to change the shuttle automatically when the yarn fails in the shuttle.

rlhe said device or mechanism comprises a shuttle magazine, a double shuttle-box, and operating or controlling means which can be readily set up on looms of the usual kind, for instance on looms for checkenwork; for the latter, all that need be done is to re move the checker-mechanism and put in its place the present mechanism without touching the base of the loom, arranging the shuttle-magazine together with its transferrer in the place of the cards, engaging the double box in the frame of the lathe box, and fitting up the driving mechanism under these parts. This substitution can be done quickly and at little expense; it does not prevent the check-mechanism from being put in place again when required, so that the same loom may be used for two different purposes.

rlhe present mechanism can also be easily set up on a single shuttle loom, for it can be located outside the main frame of the loom.

The essential features of this invention are shown in the accompanying drawings, in which- Figures 1 and 2 are front and side eleva* tions respectively of the automatic shuttlechanging mechanism; the dotted lines showing diagrammatically a checker-work loom. Fig. 3 is an elevation on alarger scale of the driving or controlling means. Figs. 4; and are vertical. sectional views of the shuttle transferrer. Figs. 6 and 7 are front and side elevations respectively of a shuttie-box. Figs. 8 and 9 show two different positions of the transferrer and the lathe.

Specification of Letters Patent.

Application filed August 3, 1907.

Patented Mar. 1, 1910.

Serial No. 387,001.

In the accompanying drawings, the loom is supposed to be a left hand one, that is with the clutch mechanism located on the left, the shuttlechanging mechanism is therefore located on the right. The said shuttle-changing mechanism comprises a shuttle -magazine l, the support 2 which is secured to the main frame 3 of the loom, a double box 4 mounted in the frame of the box 5 of the lathe and driving or controlling means arranged beneath the said parts. The said driving means or mechanism, intended to reciprocate vertically the double box l and to actuate a transferring device combined with the magazine l, is normally out of gear and is only brought into gear with the driving mechanism of the loom when the weft-yarn fails; this putting into gear is produced automatically by the operation of a weft-feeler of any kind so fitted as to rock a shaft 6, carried by the main frame in front of the loo-m. The rocking of the shaft 6, pushes back, through the medium of a finger 7, a rod 8 which is normally held up b a tooth 9 on a fixed support 10; the ro 8 thus released falls by gravitation and brings the driving mechanism into gear hereinafter described. Figs. l to 3 show that the rod 8 is guided by a square shaped piece l1 and the support 10, and that when in its upper position it is held in that position by the action of a spring 12. The lower part of the said rod carries a roll 13 on which moves a lever 14;, which is being continuously reciprocated. This continuous reciprocation is produced by means of a cam 15, secured to the eccentric shaft 416 of the loom and of a swinging piece 17 actuated by the said cam; one end of the swinging piece is pivoted at the fixed point 18, and the other end at 19` on the lever 14.

The driving mechanism comprises an ec centric shaft 2O mounted in fixed bearings 2l and 22; the said shaft carries two eccentrics 23 and 211 intended to actuate respectively the shuttle-transferrer and the double box 4; it also carries a toothed pinion 25, which meshes with a gear wheel 26, the spindle of which is carried by the support 21.

Tlhe lever 111 and the Crear wheel 26 are the two arts of the gearing which have to be broug t into gear and out of gear. For that purpose, the wheel'26 carries a stud 27 and the lever 14 is provided with a slot 28 and a projection 29, separated the one from the other by an inclined plane 30. So long as the rod 8 is held up as shown in Fig. 3, the lever 1.4 is maintained in its upper position so that its slot 28 cannot come into engagement with the stud 27, which has previously been pushed into its extreme position as shown. Therefore the wheel 26 remains motionless and is held in its position of rest by a spring bolt 31 engaged in a notch 32 Lof its periphery. On the rod 8 being released, the lever 14 moves down, and the latter bears on the stud 27, so that at the end of its stroke its slot 28 engages the stud; hence, during its following stroke toward the right, the lever carries forward the stud 27 and causes the gear wheel 26 to swing in the direction of the arrow A, while the toothed pinion 25 swings, in the opposite direction, from the position shown in Fig. 3, to the position shown in Figs. 1 and 2. The b olt 31 secures the wheel 26 vin the new position it has taken up by engaging a second notch 33 in the periphery of the same, until the cam 15 again actuates the swinging piece 17, lin bringing the lever 14 to the left. During the latter movement the stud 27 will first be pushed by the slot 28 and then move away from the latter, on account of `the rotation, to a suflicient extent to allow of the inclined plane 30 riding on the said stud finally the latter will be moved by the projection 29 into the position of rest shown in Fig. 3. The inclined plane 30 when riding on the stud 27, moves the lever 14 up and the rod 8 with it, the latter being thus brought to a stop on the support 10; for that purpose, the lever passes throughan aperture 34 of the rod 8. The driving mechanism is thus brought back into its initial position and put out of gear automatically.

Before showing the effects produced by the double swinging or oscillation of the toothed pinion 25 and of the eccentrics 23, 24, while the mechanism is being brought yinto gear, we will describe the other parts of the automatic shuttle shifting mechanism.

The magazine 1 consists of a sheet metal cage in which several shuttles are arranged one above another and suitably guided; the lowermost shuttle rests on a plate 35 slidably mounted in the ways 36 of the support 2 and can be pushed through a lateral opening V37 of the cage by a drawer shaped pusher 38 guided on the plate 35 by the studs 3.9 slida'ble in grooves. The pusher is normally held at the rear part of the plate by the action of a .spring 40; it is hollow and its upper wall carries two toothed racks v 41 above .corresponding toothed racks 42,

formed on the plate 35; between the said toothed racks are located toothed pinions 43, the spindle of which is engaged in a bifurcation 44 formed at the end of an operating arm 45 and passing freely in an opening' of the plate. The said arm -l-5 swings on a spindle 46 and coperates with another arm 47, connected by a link 48 with the eccentric 23. Then the said eccentric is at rest, the arms 47 and 45 occupy the position shown in Fig. 5, and the drawer shaped pusher 38 lies outside of the cage 1. On the eccentric making half a revolution (see Figs. 1 and 2) the arms swing and carry bodily forward the toothed pinions 43, the pusher 38 and, the plate 35; the lowermost shuttle is thus carried forward out of the cage (see Figs. 2 and 8). If now the plate 35 is pushed in the direction of the arrow B, the pusher 38 is caused to move in the reverse direction, the spindle of the toothed pinions being held stationary by the bifurcation 44; hence the shuttle is pushed by the pusher 38 beyond the plate 35 and can be inserted in the double box 4, as shown in Fig. 9. lhen the plate 35 is no longer pushed in the diiection of the arrow B, the spring 40 acts in such a` manner as to move the plate forward and the pusher backward (see Fig. 8), then when the arms 45 and 47 are brought back by the eccentrit` 23, the transferrer takes up its initial position again (see Fig. 5), and a fresh shuttle falls on the plate This system of transferring a fresh shuttle works very smoothly. because the plate, and the pusher only move the shuttle forward, while the box gathers the shuttle which is presented to it.

rIhe double box 4 (see 6 and 7) carries at the middle of its height a bottom 49. Above the said bottom lies the upper chamber or box 50; the latter is provided with a lid 51, having a tendency to be kept down by a tlat spring 52, but which is normally held up by a beveled lip 53 integral with a movable tongue 54; this tongue exists in the shuttle-boxes now in use; it is pushed inward of the box by a spring (not shown). The lid 51 is guided by two rods 55, slidable through the wall of the box 4; its lower face comprises a slight recess (not shown) by which it is enabled to apply itself onto the shuttle and thus prevent the latter from escaping in spite of the absence of a flange on the bottom 49. The lower chamber 56 of the box 4 has no bottom, but is provided with a narrow Hange at the lower part.

The double box 4, slidably mounted in the frame of the box of the lathe, is connected by a link 58 with the eccentric 24; it lies normally in its lower position (see Fig. 7) with its upper chamber in front of the path of the shuttle on the shuttle race and of the usual single box located at the left side of the loom. The bottom 49 then lies in front of the plate of the catch 5S) carried by the lathe; the shuttle placed in the said chamber 50 is retained therein by a liange 60 secured to the said plate 59. Furthermore, the rods then bear on the abutment screws 61 secured to the body part of the box frame, so that the lid 51 is held slightly raised (see ll`ig. 7) and leaves the shuttle free to slide onto the bottom 49.

llllhen the driving mechanism is out of gear, the eccentric 2t makes half a revolution and raises the double box -t in such a manner that the lower chamber comes in turn in front of the path of the shuttle, while the upper chamber comes in front of the opening in the shuttle distributer (see F ig.

The operation of the slnittle-changing mechamsm 1s as follows: When the loom is 1n normal operation, the double box 1s 1n its .lower position and the upper chamber receives the shuttle each time the latter comes to the right hand side of the loom. lVhen the yarn fails, the weft-fork or weft feeler so acts as to release the rod 8 and hence to put the lever lll into gear with the toothed wheel 2G, as hereinbefore described. The result is that the eccentrics 23,24 swing around half a revolution, and then swing back again, after which the mechanism comes into gear again of itself. The first oscillation of the eccentrics has the effect of raising the double box et and of pushing forward the plate 35 and the drawer shaped pusher 38 together (seeFig. 2). The position of the cam 15 is so adjusted that these movements take place at the time when the depleted shuttle lies in the box at the left hand side of the loom. The lat-he moves back. lVhen it comes in front, the bottom L9 meets with the plate 35 and pushes the same in such a manner that the pusher 38 forces the fresh shuttle into the chamber 50 of the double box (see Fig. 8). rIhis shuttle pushes the pressure tongue 5l in such a manner that the lip 58 releases the lid and that the latter moves down under the action of the spring 52, preventing the fresh shuttle from escaping. rlhen the depleted shuttle is expelled from the left to the right of the loom and comes into the chamber 56, between the wall of the box l and the liange G0; it is held there by the flange 57. On the return oscillation of the eccentrics, the plate 35 and the pusher 38 are brought back into their initial position andl the double box 4 is moved down (see Fig. 7) in such a manner that the depleted shuttle placed in the chamber 56 is no longer retained by the flange 60 and falls into a receptacle suitably placed underneath. At the same time, the rods 55 bear on the screws G1 and the lid 51 thus releases the fresh shuttle placed in the chamber 50. Then the loom operates normally again and the automatic shuttle-changing mechanism is ready to act as hereinbefore described until the yarn in the fresh shuttle becomes exhausted or nearly so.

It will be understood that the shuttlechanging mechanism may be constructed in such a manner as to be applicable to the left side of the looms, and that the minor details of its construction may be varied according to the requirements of its application to the different types of looms without departing from the principle of this invention.

Claims.

l. In an automatic shuttle-changing mechanism for weaving looms having a shuttle magazine and a member slidable beneath the magazine for removing the lowermost shuttle from the magazine, a shuttle transferrer comprising the combination of a plate and a drawer slidable beneath the magazine, toothed racks on the plate and the drawer, a reciprocating spindle meshing with the toothed racks, a spring whereby the drawer is pushed rearward on the plate, and means whereby the said spindle is reciprocated substantially as described.

2. In an automatic shuttle-changing mechanism for weaving-looms a boX provided with two compartments, having a baclr, a partition in the middle, a lower flange, and a movable lid, the said lid being guided by rods slidable in the back of the box, a spring whereby the said lid is Dressed downward, adjustable abutments ailapted to be arranged on the lathe of the loom for the purpose of engagement by the said rods, a resilient tongue mounted in the back of the box and adapted to be forced backward by a shuttle, and an integral nose or lip on the said tongue engaging the under side of the said lid, all operatingsubstantially as described.

8. In an automatic shuttle-changing mechanism for weaving looms, the combination of a shuttle transferrer, a vertically reciprocating box, of a shaft having eccentrics adapted to actuate the said transferrer and the said box, a toothed pinion on the said shaft, a. swinging plate having a toothed segment meshing with the said pinion, a trunnion on the said plate, a lever having an opening and a projection adapted to engage the said trunnion, means whereby the said lever may be continuously reciprocated, a rod engaging the said lever, means whereby the said rod may be held in such a position that the lever will not act on the said trunnion, and means whereby the said rod may be moved from such position and adapted to be operated when the yarn fails in the working shuttle and to allow of the lever falling into such positie-n that it will engage the said trunnion and move the swinging plate.

Ll. In an automatic shuttle changing mechanisni for looms, :L Shuttle transferrer, a vertically reciprocatingl box, a shaft, means for operating the transferrer and box from the Shaft, a reciprocating lever, a Wheel geared with the Said Shaft and operated by the Said lever, and ineens for holding Said lever in inoperative position, said means being controlled by the breakage or exhaustion of the yarn.

In testimony, that We claim the foregoillg i@ as our invention, We have signed our names in presence of two Subscribing` Witnesses. MAURICE LEBIARCHAND. RAYMOND LEMARCHAND. VICTOR MON TET. Witnesses R. VAUSSARD, EDOUARD BivAULE. 

